Length: 12 inchesWidth: 24 inches Height: 18 inches Accuracy: The US Navy spec was 2.5 mils - a 2.5 foot miss per 1,000 feet of altitude - at 20,000 feet a bomb should theoretically fall within 50 feet of the aiming point. One out of every 10 Norden Bombsights produced was taken to a test facility for quality control and calibration. Nordens that were not calibrated had an accuracy of more like 14 mils, or a 14 foot miss for every 1,000 feet of altitude Number Produced: 90,000 for a total cost of $1.1 billion Unit Cost: $1,222 average